CN114032944A - Offshore wind power high-rise pile cap construction method and system - Google Patents
Offshore wind power high-rise pile cap construction method and system Download PDFInfo
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- 238000010276 construction Methods 0.000 title claims abstract description 124
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 114
- 239000010959 steel Substances 0.000 claims abstract description 114
- 238000000034 method Methods 0.000 claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 238000003466 welding Methods 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
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- 230000000694 effects Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
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- 230000009193 crawling Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/14—Pile framings, i.e. piles assembled to form the substructure
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
- E02D27/425—Foundations for poles, masts or chimneys specially adapted for wind motors masts
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Abstract
The invention provides a construction method and a system for an offshore wind power high-rise pile cap, which comprises the following steps: assembling steel pouring boxes, installing cranes, hoisting the steel pouring boxes, performing primary concrete pouring, dismantling the cranes, performing reinforcing steel bar construction, hoisting the cranes, performing secondary concrete pouring and dismantling the cranes. The cantilever beam supporting base is formed on the steel sleeve box, the crane is installed on the cantilever beam supporting base through the flange base, the truss upright post structure is installed in the steel sleeve box, and the crane is fixed with the truss upright post structure through the flange base, so that the crane can complete the construction of the whole high-pile bearing platform. Compared with the existing construction method, the method has the advantages that the crane is positioned on the steel sleeve box, and the steel sleeve box is fixedly positioned in the sea, so that the crane can stably run on the steel sleeve box, the crane can work in various weather environments on the sea, the operation time is prolonged, the construction safety is guaranteed, and the problem of low efficiency caused by the influence of weather in the sea area in the existing high-pile bearing platform construction is solved.
Description
Technical Field
The invention relates to the technical field of wind power construction engineering, in particular to a construction method and a system of an offshore wind power high pile cap.
Background
Offshore wind power generation is a novel power generation mode for generating power by utilizing offshore wind resources. Under the condition of increasingly severe petroleum resource situation, all countries project eyes to sea areas with huge wind power resources. With the development and application of new wind power technologies, new materials and new processes in recent years, offshore wind power with the characteristics of high power density, stable energy and the like is entering the high tide of large-scale construction.
In the construction process of the offshore wind generating set, the construction of a high pile cap is one of the more important steps. The main construction process flow of the high pile cap comprises the following steps: pile sinking, pile cutting, steel sleeve box installation, bottom sealing concrete construction, pile core construction, bearing platform steel bar binding, embedded part installation, bearing platform concrete construction, steel sleeve box dismantling and the like. Not only do the processes numerous, the materials used are various, but also the installation and removal of each component is involved, resulting in a longer construction cycle.
At present, in the construction process of an offshore wind generating set, a crane ship and a multifunctional barge are generally used for realizing construction operation. However, sea construction conditions in sea areas are influenced by weather such as surge, tide and monsoon for a long time, construction operation environments are poor, conventional multifunctional barges and lifting ships shake too much, ship machines are difficult to adapt, personnel and materials cannot be lifted from the ships to bearing platforms, field working efficiency is low, and construction progress requirements cannot be met.
Disclosure of Invention
The invention aims to provide a construction method and a system for an offshore wind power high-rise pile cap, which at least solve the problem of low efficiency caused by the influence of sea weather in the construction of the existing high-rise pile cap.
In order to solve the technical problem, the invention provides a construction method of an offshore wind power high pile cap, which comprises the following steps:
assembling the steel sleeve box: manufacturing a steel pouring jacket to form an outrigger support base on the steel pouring jacket;
installing a crane: fixing the crane with the cantilever beam supporting base through a flange base;
hoisting the steel sleeve box: hoisting the steel jacket box provided with the crane to the steel pipe pile by using the crane ship, and fixedly mounting the steel jacket box and the steel pipe pile;
pouring concrete in the first period: completing the first-stage concrete construction by using a crane, wherein a bearing platform internal supporting structure is pre-buried;
dismantling the crane: dismantling and conveying the crane, the flange base and the outrigger support base to a crane ship, and dismantling and separating the crane, the flange base and the outrigger support base on the crane ship;
and (3) steel bar construction: installing a truss upright post structure;
hoisting a crane: hoisting a crane to the truss upright post structure by using a crane ship, and fixing the crane and the flange base;
pouring concrete in the second stage: completing second-stage concrete construction by using a crane;
dismantling the crane: the crane is removed together with the flange base and transported back to the crane vessel.
Optionally, in the offshore wind power high-rise pile cap construction method, the method for installing the crane includes:
manufacturing a flange base;
welding and fixing the bottom of the flange base and the cantilever beam supporting base;
and fixing the base of the crane and the top of the flange base by bolts.
Optionally, in the offshore wind power high-rise pile cap construction method, the bottom of the steel pouring jacket is provided with supporting section steel, and the steel bar construction method includes:
manufacturing a truss upright post main body;
welding the disassembled flange base and the truss upright post main body to obtain a truss upright post structure;
and fixing the truss upright post structure with the bearing platform internal support structure which is pre-embedded for the first time.
Optionally, in the offshore wind power high-rise pile cap construction method, after the first-stage concrete pouring is completed, the top of the internal support structure of the cap is at least 0.6m higher than the surface of the concrete.
Optionally, in the method for constructing the offshore wind power high-rise pile cap, the method for completing the first-stage concrete construction and the second-stage concrete construction by using the crane comprises the following steps: and remotely controlling the crane to finish the first-stage concrete construction and the second-stage concrete construction.
Optionally, in the offshore wind power high-rise pile cap construction method, before the crane is hoisted, the second-stage concrete pouring method includes:
pouring concrete and pouring the truss upright post structure in the concrete until the truss upright post structure is exposed out of the reserved thickness;
and after the crane is disassembled, filling the truss upright post structure with concrete.
Optionally, in the construction method of the offshore wind power high pile cap, after the second-stage concrete is poured,
before the crane is dismantled, the construction method of the offshore wind power high pile cap further comprises the following steps:
the construction work of the bearing platform and other accessory facilities is carried out.
In order to solve the above technical problem, the present invention further provides an offshore wind power high pile cap construction system, for implementing the offshore wind power high pile cap construction method, wherein the offshore wind power high pile cap construction system comprises: the steel sleeve box, the flange base and the crane; the steel pouring jacket is provided with an outrigger supporting base which is detachably connected with the crane through the flange base so as to enable the crane to perform primary concrete pouring; the steel pouring jacket is characterized in that a truss upright post structure is also pre-embedded in the steel pouring jacket, and the truss upright post structure is detachably connected with the crane through the flange base so that the crane can perform secondary concrete pouring.
Optionally, in the offshore wind power high-rise pile cap construction system, the truss column structure is built by using Q345B steel; the maximum working bending moment of the crane is not more than 280 kN.m, and the self weight is not more than 8 t.
Optionally, in the offshore wind power high pile cap construction system, the top of the outrigger support base is welded and fixed to the bottom of the flange base; and the top of the flange base is fixed with a base bolt of the crane.
The invention provides a construction method and a system of an offshore wind power high pile cap, comprising the following steps: assembling the steel sleeve box: manufacturing a steel pouring jacket to form an outrigger support base on the steel pouring jacket; installing a crane: fixing the crane with the cantilever beam supporting base through a flange base; hoisting the steel sleeve box: hoisting the steel jacket box provided with the crane to the steel pipe pile by using the crane ship, and fixedly mounting the steel jacket box and the steel pipe pile; pouring concrete in the first period: completing the first-stage concrete construction by using a crane, wherein a bearing platform internal supporting structure is pre-buried; dismantling the crane: dismantling and conveying the crane, the flange base and the outrigger support base to a crane ship, and dismantling and separating the crane, the flange base and the outrigger support base on the crane ship; and (3) steel bar construction: installing a truss upright post structure; hoisting a crane: hoisting a crane to the truss upright post structure by using a crane ship, and fixing the crane and the flange base; pouring concrete in the second stage: completing second-stage concrete construction by using a crane; dismantling the crane: the crane is removed together with the flange base and transported back to the crane vessel. The cantilever beam supporting base is formed on the steel sleeve box, and the crane is arranged on the cantilever beam supporting base through the flange base, so that the crane can perform primary concrete pouring; the truss upright post structure is installed in the steel sleeve box, and the crane is fixed with the truss upright post structure by the flange base, so that the crane can perform secondary concrete pouring, and the construction of the whole high pile cap is completed. Compared with the existing construction method, the method has the advantages that the crane is positioned on the steel sleeve box, and the steel sleeve box is fixedly positioned in the sea, so that the crane can stably run on the steel sleeve box, the crane can work in various weather environments on the sea, the operation time is prolonged, the construction safety is guaranteed, and the problem of low efficiency caused by the influence of weather in the sea area in the existing high-pile bearing platform construction is solved.
Drawings
Fig. 1 is a flowchart of a construction method of an offshore wind power high-rise pile cap provided in this embodiment;
fig. 2 is a schematic structural view of the high pile cap after the steel sleeve box is hoisted in the offshore wind power high pile cap construction method provided by the embodiment;
fig. 3 is a schematic structural view of the high pile cap after the second-stage concrete is poured in the offshore wind power high pile cap construction method provided by the embodiment;
wherein the reference numerals are as follows:
100-steel jacket box; 110-outrigger support base; 120-a cushion cap internal support structure; 130-truss column structure; 200-a flange base; 300-crane.
Detailed Description
The construction method and system of the offshore wind power high-rise pile cap provided by the invention are further described in detail with reference to the accompanying drawings and specific embodiments. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention. Further, the structures illustrated in the drawings are often part of actual structures. In particular, the drawings may have different emphasis points and may sometimes be scaled differently.
It should be noted that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of the present invention and the accompanying drawings, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The embodiment provides a construction method of an offshore wind power high-rise pile cap, as shown in fig. 1, including:
assembling the steel sleeve box: manufacturing a steel pouring jacket to form an outrigger support base on the steel pouring jacket;
installing a crane: fixing the crane with the cantilever beam supporting base through a flange base;
hoisting the steel sleeve box: hoisting the steel jacket box provided with the crane to the steel pipe pile by using the crane ship, and fixedly mounting the steel jacket box and the steel pipe pile;
pouring concrete in the first period: completing the first-stage concrete construction by using a crane, wherein a bearing platform internal supporting structure is pre-buried;
dismantling the crane: dismantling and conveying the crane, the flange base and the outrigger support base to a crane ship, and dismantling and separating the crane, the flange base and the outrigger support base on the crane ship;
and (3) steel bar construction: installing a truss upright post structure;
hoisting a crane: hoisting a crane to the truss upright post structure by using a crane ship, and fixing the crane and the flange base;
pouring concrete in the second stage: completing second-stage concrete construction by using a crane;
dismantling the crane: the crane is removed together with the flange base and transported back to the crane vessel.
According to the construction method of the offshore wind power high pile cap, the outrigger support base is formed on the steel sleeve box, and the crane is installed on the outrigger support base through the flange base, so that the crane can perform primary concrete pouring; the truss upright post structure is installed in the steel sleeve box, and the crane is fixed with the truss upright post structure by the flange base, so that the crane can perform secondary concrete pouring, and the construction of the whole high pile cap is completed. Compared with the existing construction method, the method has the advantages that the crane is positioned on the steel sleeve box, and the steel sleeve box is fixedly positioned in the sea, so that the crane can stably run on the steel sleeve box, the crane can work in various weather environments on the sea, the operation time is prolonged, the construction safety is guaranteed, and the problem of low efficiency caused by the influence of weather in the sea area in the existing high-pile bearing platform construction is solved.
Further, in this embodiment, the method for installing a crane includes:
manufacturing a flange base;
welding and fixing the bottom of the flange base and the cantilever beam supporting base;
and fixing the base of the crane and the top of the flange base by bolts.
And, in this embodiment, the method of reinforcing bar construction includes:
manufacturing a truss upright post main body;
welding the disassembled flange base and the truss upright post main body to obtain a truss upright post structure;
and fixing the truss upright post structure with the bearing platform internal support structure which is pre-embedded for the first time.
In order to facilitate the connection and fixation of the internal support structure of the bearing platform and the truss upright post structure, in the embodiment, after the concrete pouring is finished for the first time, the top of the internal support structure of the bearing platform is at least 0.6m higher than the concrete surface.
Preferably, in this embodiment, the method for completing the first-stage concrete construction and the second-stage concrete construction by using the crane includes: and remotely controlling the crane to finish the first-stage concrete construction and the second-stage concrete construction. Therefore, the operation of climbing by personnel can be avoided, the construction safety of the personnel is ensured, the engineering quantity of building the crawling ladder, the handrail and the like can be reduced, and the operation efficiency is improved.
Further, in this embodiment, the method for pouring the secondary concrete includes:
pouring concrete and pouring the truss upright post structure in the concrete until the truss upright post structure is exposed out of the reserved thickness;
and after the crane is disassembled, filling the truss upright post structure with concrete.
Because the truss stand column structure is also built by utilizing the section steel, the truss stand column structure can be directly poured in the bearing platform, the bearing performance of the bearing platform cannot be adversely affected, and meanwhile, the truss stand column structure does not need to be dismantled, so that the engineering quantity is reduced, and the construction is convenient.
Certainly, in a specific construction process, after the second-stage concrete pouring and before the crane is removed, the construction method of the offshore wind power high pile cap further comprises the following steps:
the construction work of the bearing platform and other accessory facilities is carried out.
So, utilize required steel bushing box structure in the cushion cap work progress, utilize the flange base fixed with loop wheel machine detachable above that, alright in order to realize in the cushion cap work progress loop wheel machine fixed for the construction point to can carry out work under all kinds of weather environment on the sea, not only improve the activity duration, still guarantee construction safety, solve the problem of the inefficiency that current high pile cushion cap construction leads to because of sea area weather effect.
This embodiment still provides an offshore wind power high pile cushion cap construction system, includes: the steel sleeve box, the flange base and the crane; the steel pouring jacket is provided with an outrigger supporting base which is detachably connected with the crane through the flange base so as to enable the crane to perform primary concrete pouring; the steel pouring jacket is characterized in that a truss upright post structure is also pre-embedded in the steel pouring jacket, and the truss upright post structure is detachably connected with the crane through the flange base so that the crane can perform secondary concrete pouring.
Specifically, the truss column structure is built by Q345B steel; the maximum working bending moment of the crane is not more than 280 kN.m, and the self weight is not more than 8 t.
Preferably, in this embodiment, the top of the outrigger support base is welded and fixed to the bottom of the flange base; and the top of the flange base is fixed with a base bolt of the crane.
Hereinafter, the offshore wind power high pile cap construction method and system provided by the present invention will be described with reference to fig. 2 and 3.
In the construction process of the high pile cap, after pile sinking and pile cutting are completed and before steel sleeve boxes are installed, the steel sleeve boxes are assembled on the site. The difference from the prior art is that in the present embodiment, when assembling the steel pouring jacket 100, the outrigger support base 110 needs to be formed on the steel pouring jacket 100, and the outrigger support base 110 can be set up at a suitable position of the outrigger of the steel pouring jacket 100, and the position is selected so as to facilitate the first-stage construction operation of the whole bearing platform. The outrigger support base 110 needs to have a certain load bearing capacity to load the flange base and the crane.
Then, the crane 300 is fixed to the outrigger support base 110 through a flange base 200, thereby integrating the crane 300 with the steel jacket box 100. Specifically, before the crane is installed, the flange base 200 needs to be assembled, and after the flange base 200 is assembled, the flange base is fixed to the outrigger support base 110 by welding, and is fixed to the crane 300 by bolts.
Thereafter, the steel jacket box 100 with the crane 300 installed thereon is hoisted to the steel pipe pile by the crane ship, and the steel jacket box 100 and the steel pipe pile are fixedly installed, and the configuration diagram at this time is shown in fig. 2. The specific connection method of the steel casing box 100 and the steel pipe pile is well known to those skilled in the art, and will not be described herein. In the present embodiment, the inclination angle of the steel pipe piles is 5:1, and the number of the steel pipe piles is 8.
At this time, the crane 300 can perform a lifting operation on the platform on which the steel jacket box is located, and can be used as a lifting device for a bottom layer, an upper layer of steel bars, embedded parts and auxiliary tools of the bearing platform.
Then, the crane 300 completes the first stage of concrete construction including pre-embedding the inner support structure 120 of the bearing platform by remote control. Specifically, as shown in fig. 3, first, the bearing platform internal support structure 120 is installed at the bottom of the steel jacket box 100 and is welded and fixed with the support section steel at the bottom of the steel jacket box 100, so that the bearing platform internal support structure 120 is fixed relative to the bottom of the steel jacket box 100; then, primary concrete pouring is performed. After the casting is completed, the top of the cap inner support structure 120 is at least 0.6m above the concrete surface. In this embodiment, the height of the inner support structure 120 of the platform is about 1.5m, and the height of the first-stage poured concrete is about 0.8 m.
After a period of concrete pouring is complete, the crane 300 needs to be removed from the steel jacket and returned to the crane vessel. Specifically, the crane, the flange base and the outrigger support base are removed together and transported back to the crane ship, and the crane, the flange base and the outrigger support base are detached and separated on the crane ship. In this embodiment, in order to save man-hour, dismantle the outrigger from the steel casing box together, then dismantle the separation once more with the three on the jack-up ship.
In order to perform the post-construction, in the present embodiment, the truss column structure 130 is installed after the first-stage construction is completed. Specifically, a truss upright post main body is manufactured on a crane ship or on land; then, welding the disassembled flange base 200 with the truss column main body on a crane ship to obtain a truss column structure; finally, the truss column structure is moved to the cap inner support structure 120 by a crane ship and fixed to the cap inner support structure 120.
At this time, the crane 300 may be transported to the flange base 200 by using a crane ship and bolted to the flange base, so that a crane system for second stage construction is constructed, as shown in fig. 3.
At this time, the second stage concrete construction and other operations can be completed by using the crane. The specific construction method is well known to those skilled in the art and will not be described herein. However, one point to note is that: in the embodiment, concrete is used for pouring and the truss column structure is poured therein until the truss column structure is exposed out of the reserved thickness; and after the crane is disassembled, filling the truss upright post structure with concrete.
Certainly, in the actual construction process, after the second-stage concrete pouring and before the crane is removed, the construction method of the offshore wind power high pile cap further includes: the construction work of the bearing platform and other accessory facilities is carried out.
And finally, finishing the construction of the whole high pile cap.
In summary, the offshore wind power high-rise pile cap construction method and system provided by this embodiment include: assembling the steel sleeve box: manufacturing a steel pouring jacket to form an outrigger support base on the steel pouring jacket; installing a crane: fixing the crane with the cantilever beam supporting base through a flange base; hoisting the steel sleeve box: hoisting the steel jacket box provided with the crane to the steel pipe pile by using the crane ship, and fixedly mounting the steel jacket box and the steel pipe pile; pouring concrete in the first period: completing the first-stage concrete construction by using a crane, wherein a bearing platform internal supporting structure is pre-buried; dismantling the crane: dismantling and conveying the crane, the flange base and the outrigger support base to a crane ship, and dismantling and separating the crane, the flange base and the outrigger support base on the crane ship; and (3) steel bar construction: installing a truss upright post structure; hoisting a crane: hoisting a crane to the truss upright post structure by using a crane ship, and fixing the crane and the flange base; pouring concrete in the second stage: completing second-stage concrete construction by using a crane; dismantling the crane: the crane is removed together with the flange base and transported back to the crane vessel. The cantilever beam supporting base is formed on the steel sleeve box, and the crane is arranged on the cantilever beam supporting base through the flange base, so that the crane can perform primary concrete pouring; the truss upright post structure is installed in the steel sleeve box, and the crane is fixed with the truss upright post structure by the flange base, so that the crane can perform secondary concrete pouring, and the construction of the whole high pile cap is completed. Compared with the existing construction method, the method has the advantages that the crane is positioned on the steel sleeve box, and the steel sleeve box is fixedly positioned in the sea, so that the crane can stably run on the steel sleeve box, the crane can work in various weather environments on the sea, the operation time is prolonged, the construction safety is guaranteed, and the problem of low efficiency caused by the influence of weather in the sea area in the existing high-pile bearing platform construction is solved.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (10)
1. A construction method of an offshore wind power high-rise pile cap is characterized by comprising the following steps:
assembling the steel sleeve box: manufacturing a steel pouring jacket to form an outrigger support base on the steel pouring jacket;
installing a crane: fixing the crane with the cantilever beam supporting base through a flange base;
hoisting the steel sleeve box: hoisting the steel jacket box provided with the crane to the steel pipe pile by using the crane ship, and fixedly mounting the steel jacket box and the steel pipe pile;
pouring concrete in the first period: completing the first-stage concrete construction by using a crane, wherein a bearing platform internal supporting structure is pre-buried;
dismantling the crane: dismantling and conveying the crane, the flange base and the outrigger support base to a crane ship, and dismantling and separating the crane, the flange base and the outrigger support base on the crane ship;
and (3) steel bar construction: installing a truss upright post structure;
hoisting a crane: hoisting a crane to the truss upright post structure by using a crane ship, and fixing the crane and the flange base;
pouring concrete in the second stage: completing second-stage concrete construction by using a crane;
dismantling the crane: the crane is removed together with the flange base and transported back to the crane vessel.
2. The offshore wind power high pile cap construction method of claim 1, wherein the method of installing a crane comprises:
manufacturing a flange base;
welding and fixing the bottom of the flange base and the cantilever beam supporting base;
and fixing the base of the crane and the top of the flange base by bolts.
3. The offshore wind power high pile cap construction method of claim 1, wherein the method of rebar construction comprises:
manufacturing a truss upright post main body;
welding the disassembled flange base and the truss upright post main body to obtain a truss upright post structure;
and fixing the truss upright post structure with the bearing platform internal support structure which is pre-embedded for the first time.
4. The offshore wind power high pile cap construction method of claim 1, characterized in that after a period of concrete pouring, the top of the cap internal support structure is at least 0.6m above the concrete surface.
5. The offshore wind power high pile cap construction method according to claim 1, wherein the method for completing the first stage concrete construction and the second stage concrete construction by using the crane comprises the following steps: and remotely controlling the crane to finish the first-stage concrete construction and the second-stage concrete construction.
6. The offshore wind power high pile cap construction method of claim 1, wherein the second stage concrete pouring method comprises:
pouring concrete and pouring the truss upright post structure in the concrete until the truss upright post structure is exposed out of the reserved thickness;
and after the crane is disassembled, filling the truss upright post structure with concrete.
7. The offshore wind power high pile cap construction method of claim 6, wherein after the second stage of concrete pouring and before the crane is dismantled, the offshore wind power high pile cap construction method further comprises:
the construction work of the bearing platform and other accessory facilities is carried out.
8. An offshore wind power high pile cap construction system for implementing the offshore wind power high pile cap construction method according to any one of claims 1 to 7, wherein the offshore wind power high pile cap construction system comprises: the steel sleeve box, the flange base and the crane; the steel pouring jacket is provided with an outrigger supporting base which is detachably connected with the crane through the flange base so as to enable the crane to perform primary concrete pouring; the steel pouring jacket is characterized in that a truss upright post structure is also pre-embedded in the steel pouring jacket, and the truss upright post structure is detachably connected with the crane through the flange base so that the crane can perform secondary concrete pouring.
9. The offshore wind power high pile cap construction system of claim 8, wherein the truss column structure is built using Q345B steel; the maximum working bending moment of the crane is not more than 280 kN.m, and the self weight is not more than 8 t.
10. The offshore wind power high pile cap construction system of claim 8, wherein the top of the outrigger support base is welded to the bottom of the flange base; and the top of the flange base is fixed with a base bolt of the crane.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111246612.5A CN114032944A (en) | 2021-10-26 | 2021-10-26 | Offshore wind power high-rise pile cap construction method and system |
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| CN (1) | CN114032944A (en) |
Citations (5)
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Application publication date: 20220211 |